More flashback this chapter. A more condensed version compared to the anime though, which is too bad. That only-head EVA is kind of creepy looking. I don't remember the anime mentioning any plans to completely regenerate Adam, but all Evas
except for Unit-01 come from Adam, so....maybe it's possible. Neither the anime or the manga really explain how Adam was stopped though, and why it lead to an explosion. Seems like a major plot hole.